Upon completion of this module,you should be able to :
Discuss the features and benefits of the RAID Manager software
Define the terms(Logical unit,Drive group,RAID module)
Discuss hot spare usage
Describe the data reconstruction process
Describe RAID Manager device naming conventions
Define caching control options
RAID Manager Components and Features
Major components
User interfaces
RAID Manager(RM) engine
Redundant dual active controller(RDAC) driver
RAID Manager features
Solstice DiskSuite compatible features
Volume Manager compatible features
Unsupported features
A drive group is a set of physical drives in a particular RAID module.Drive groups define a pool of space in which all the logical volumes are of the same RAID level,the RAID level of the drive group. In addition, when the host system has access to the drives through two controllers, load balancing between the controllers is achieved though sharing drive groups between controllers. Drive groups are defined from the Configuration window.
The LUN configuration information is stored redundantly on three disk drives in the configuration. The location of these drives is not known to the user and is managed by the controllers. The LUN information is not user accessible. It is visible only through the RM6 Configuration Manager application
The drive group that contains LUN 0 will always be drive group 1. If LUN 0 is removed from group 1,and all the other LUNs are being used, and a new LUN is added to group 3(because there was unused disk space in that group), then when LUN 0 is added to group 3 it will become group 1. Drive group 2 will contain the next lowest numbered LUN.
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